.circle_dks_container {
  position: absolute;
  /* 脱离文档流 */
  float: left;
  cursor: pointer;
}

.circle_dks_resizable {
  width: 26px;
  height: 26px;
  overflow: scroll;
  resize: horizontal;
  cursor: pointer;
  opacity: 0;
  min-width: 26px;
  position: relative;
  left: 5px;
}

/* 更改拖拽图标的大小和父容器一样大 */
.circle_dks_resizable::-webkit-scrollbar {
  width: 15px;
  height: 26px;
  cursor: ew-resize;
}

/* 使用定位, 将容器定位到父容器的正中间, 跟着父容器的大小改变而改变 */
.circle_dks_content {
  margin-right: 0;
  position: absolute;
  top: 0;
  /* 留出5px为了鼠标放上去可以显示拖拽 */
  right: 0px;
  bottom: 0;
  left: 0;
  background-color: orange;
}